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JUCS - Journal of Universal Computer Science 2(6): 503-513
doi: 10.3217/jucs-002-06-0503
Published: 28 Jun 1996
This article is part of:
JUCS - Journal of Universal Computer Science 2(6)
Authors
Stephan Schwan - Corresponding author
German Institute for Research on Distance Education at the University of Tübingen, Germany
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Friedrich W. Hesse
German Institute for Research on Distance Education at the University of Tübingen, Germany
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Conflict of interest
The authors have declared that no competing interests exist.
This article is freely available under the J.UCS Open Content License.
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